fix link

docs/modules/ROOT/pages/jme3/features.adoc

@@ -198,7 +198,7 @@ a|OGG Vorbis music and sounds
 *  GLSL support
 *  Shader libraries
 *  Shader permutations
-*  xref:jme3/advanced/jme3_shadernodes.adoc[Shader Nodes]
+*  xref:core:shader/jme3_shadernodes.adoc[Shader Nodes]
 
 
 == Material Lighting